先看集合post中文档信息:
> db.post.find(); { "_id" : ObjectId("54a51cfd7f46906f81b7adcd"), "bar" : "baz" } { "_id" : 0 } { "_id" : 1 } { "_id" : 2 } { "_id" : 5, "test1" : 0 } { "_id" : 4, "test2" : 2 } { "_id" : 3, "test3" : 3 } { "_id" : 6, "test5" : 5 } { "_id" : 7, "test1" : 1 } { "_id" : 8, "test1" : 1 }
删除指定的文档:
> db.post.remove({"_id":5}); WriteResult({ "nRemoved" : 1 }) > db.post.find(); { "_id" : ObjectId("54a51cfd7f46906f81b7adcd"), "bar" : "baz" } { "_id" : 0 } { "_id" : 1 } { "_id" : 2 } { "_id" : 4, "test2" : 2 } { "_id" : 3, "test3" : 3 } { "_id" : 6, "test5" : 5 } { "_id" : 7, "test1" : 1 } { "_id" : 8, "test1" : 1 }
删除所有{“test1”:1}的文档:
> db.post.remove({"test1":1}); WriteResult({ "nRemoved" : 2 }) > db.post.find(); { "_id" : ObjectId("54a51cfd7f46906f81b7adcd"), "bar" : "baz" } { "_id" : 0 } { "_id" : 1 } { "_id" : 2 } { "_id" : 4, "test2" : 2 } { "_id" : 3, "test3" : 3 } { "_id" : 6, "test5" : 5 } >
删除整个post集合:
> db.post.drop() true > show collections system.indexes >
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